Gasket.



No. 854,135. PATENTED MAY 21, 1907.

' J. R. WHITTEMORE.

GASKET.

APPLIOATION FILED MAY 11, 1906.

wit 14030; /0 kjknliiwiaittemora UNITED sTArEs PATENT OFFICE.-

GASKET..-

Specification of Letters Patent.

Patented May 21, 1907.

Application filed May 11, 1906. Serial No. 316,802.

To all whom it may concern:

' Be it known thatI, JOHN R. WHITTEMORE, a citizen of the United States, residing.at

' Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Gaskets, of which the following is a specification.

In producing steam-tight, or other pressure-tight, joints by means of gaskets diffi cultyis experienced in keeping the gasket in position against the pressure. Ithas heretofore been proposed to use thin copper or other ductile metal in the form of gaskets but such material soon becomes brittle and also becomes so corroded as to be useless. Where fabric gaskets are used they lack sufficient transverse rigidity to accomplish de-.

sired results.

I have discovered that, by providing a fabric gasket witha transversely-stiff strengthening core, a very satisfactory, cheap and efficient gasket may be produced.

. The accompanying drawings illustrate my invention:

Figure 1 is a planof a round gasket constructed in accordance with -my discovery; Fig. 2 a similar view of a rectangular gasket;

Fig. 3 a plan of'the core of the gasket shown in Fig. 1; Fig. 4 a plan of the core shown in Fig. 2; Fig. 5 a transverse section, highly magnified, of a gasket constructed in accordance with my invention; Fig. 6. a similar view of another form; Fig. 7 a similar view of another form; Fig. 8 a similar view showin the manner of use. In the drawings 10 indicates a gasket core of transversely stiff material such, for instance, as thin copper or any other suitable material. Incasing the core 10 is a compressible fabric covering which, on the pressure edge of the gasket, is continuous as shown atA. In Fig. 5 the fabric 1 1 is astand ard fabric sheet-packing f ound in the market, this packing being formed of woven threads each of which is com osed of a central core .12 of very fine fieXib e wire, and a covering 13 of asbestos or other suitable material. In the form shown in Fi 5 the core 10 is incased'by doubling the abric 11 over the core pressi the line of fold of the fabric being presented to the fluid pressure as indicated.

In Fig. 6 a doubled strip of any ordinary Woven or felted packing fabric 14 is illustrated, while in Fig. 7 the core 10 is shown as completely incased in a casing of packing fabric 15. In this last form either edge of the gasket may be subjected to pressure.

By the combinationof the fabric face and the transversely stiff core I find it possible Ito produce aacking which is fluid tight low out transversely. This and will not packing is, also useful in connection with su erheated steam as the core furnishes suf- 1. A packing gasket comprising a central.

transversely-stiff core and a casing of packing fabric presenting a continuous portion at the pressure edge of the core.

2. A packing gasket comprising a central core of transversely stiff material and a casing of a strip of packing fabric doubled to embrace the pressure edge of the core.

3. A packing gasket comprising a metallic core and a casing of packing fa'bric presenting a continuous portion at the pressure edge of the core.

4. A packing gasket comprising a transversely stiff metallic core between a strip of packing fabric doubled over the core at'its pressure edge.

5. A packing gasket comprising a central core of transversel stiff material incased in astrip of a woven abric composed of threads having a metallic ,core covered by a comle packing, and doubled over the core at its pressure edge.

6. A'packing gasket comprising a trans-.

versely stiff metallic core lyin between a strip of a packing fabric woven om threads my hand and seal at Indianapolis, Indiana, this 7th day of May, A. D. one thousand nine :0 hundred and six. 7

JOHN R. WHITTEMORE.

Witnesses:

ARTHUR M. H001), THOMAS W. MOMEANS. 

